Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a97a49dff96a1e2…

MALICIOUS

PDF

35.7 KB Created: 2021-07-07 13:18:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8a2f742f18a3547cbd6293434688d900 SHA-1: 63090b73d3223e13c5efc31d15fd44e255ea313b SHA-256: 2a97a49dff96a1e22dfeacb3298632b43ad7a76e19f12d2ca90f6cdf97f69296
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document uses a game hack lure to entice users to click on an embedded URL. The ML classifier and PDF heuristics strongly indicate malicious intent, likely leading to a second-stage download or phishing attempt. No scripts were extracted, but the primary URL is a strong indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/406889139/coin-master-time-hack-game-hack PDF link annotation
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/hire-a-hacker-for-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/how-to-hack-hilton-hotel-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/how-to-get-free-vip-on-any-server-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/top-10-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/free-tiktok-followers-com_GM835599320.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/free-robux-promo-codes-pastebin_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/pubg-uc-earning-app_GM1330123889.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/telecharger-roblox-booga-booga-hack-le-meilleur_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-freebies_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3451 23508 bytes
SHA-256: 613780e178f53a5b422b08de08ab1083cf266a79d1c9220545c5f42a75066a84
font_01_sfnt_off00006918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6918 18264 bytes
SHA-256: a35f03033499eda65d45903a57c9add3aa2902d7cbd0f8850fdac8c8cf98d449

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